What Happens After the Universe Ends?

The video explores Conformal Cyclic Cosmology (CCC), a theory by Roger Penrose suggesting that the universe undergoes endless cycles of Big Bangs and expansions. It explains conformal transformations, which preserve angles in space-time, and discusses how light and massless particles play a role in this theory. The video also covers Penrose diagrams, the implications of CCC on the universe's future and past, and potential evidence for CCC in cosmic microwave background radiation.

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